How long does it take to charge an electric bike?

Waiting for your electric bike to recharge doesn't have to be as boring as watching paint dry. Here's how long it takes to fully recharge, with some useful tips.


Cyclists only need a banana or an energy bar. Electric bikes, on the other hand, need a fully charged battery. On average, a full charge takes a few hours. Here's everything you need to know about charging times and how to keep your battery ready for use.

Electric fatbike with battery

How long does it take to charge an electric bike?

This depends on battery capacity, charger power and current charge level. On average, an e-bike battery takes between 3 and 6 hours to go from empty to full charge.

Battery capacity

Bosch battery for electric bikes
The larger the battery, the longer it lasts, but the longer it takes to recharge. Its capacity is measured in watt-hours (Wh). Batteries range from 300 Wh to 750 Wh, with some reaching 800 Wh. Standard sizes are now 400 Wh, 500 Wh and 625 Wh. Larger engines consume more power.

Charger amperage

Charging speed also depends on charger amperage. The higher the amperage, the faster the charge. Be careful, however, not to use a charger with too much amperage, as this can damage the battery. Most chargers are rated at 2 or 4 amps.

With its EnergyPak technology, Giant offers a "Smart" 6 A charger that recharges to 80% in 2 hours, and to 100% in 4 hours. After 500 cycles, the charger automatically reduces voltage to preserve the battery. The 4 A "Fast Charger" is lighter and ideal for everyday use.

How do I charge an electric bike?

The best method is to follow the manufacturer's instructions. In general :
Charging kit for Bosch battery
  1. Locate the load port (often on the frame).
  2. Remove the battery if it is removable.
  3. Plug the charger into a suitable outlet.
  4. Connect the charger to the battery port.
  5. Keep an eye on the LEDs (green = charged).
  6. Unplug when charging is complete.
  7. Replace the battery if it has been removed.

How many charges does an electric bike battery last?

Service life is measured in charge cycles. One cycle corresponds to one full charge. Recharging from 50% to 100% is equivalent to 0.5 cycles.

Batteries generally last between 500 and 1,000 cycles. Bosch guarantees 500 cycles or 2 years, and advertises a life of 8-9 years. Giant achieves up to 2,300 cycles.

Tips for efficient charging

  • Recharge after every outing: To keep your battery full at all times.
  • Use a quality charger : ideally the one supplied with your bike.
  • Avoid full discharges: Partial recharges extend service life.
  • Charge at room temperature: Not too cold, not too hot.
  • Store correctly: If you're not using the bike, store the battery at 50-75% and at room temperature.

Upway bikes and batteries

Upway sells reconditioned electric bikes from leading brands, fitted with certified batteries. Each bike is rigorously inspected, and batteries below 80% are replaced.

Key points

  • Charging time: Generally 3-6h. Some chargersGiant 6A) offer 80% in 2h.
  • Service life: 500 to 1,000 cycles, up to 2,300 cycles for top-of-the-range models.
  • Good habits: Avoid total discharge, charge at room temperature, and store between 50-75% if unused.

Your most frequently asked questions

How long does it take to recharge an electric bike?

On average, a full recharge takes between 3 and 6 hours. With a fast charger, such as Giant's Smart Charger 6A, it can take as little as 4 hours.

How far can you travel on a fully charged electric bike battery?

This depends on battery capacity, driving style and terrain. A 500 Wh battery will generally last between 60 and 120 km.

How many recharging cycles can an electric bike battery withstand?

Most electric bike batteries last between 500 and 1,000 complete cycles. Giant 's EnergyPak technology can achieve up to 2,300 cycles.

Is it bad to let an electric bike battery discharge completely?

Yes, frequent discharging can shorten battery life. We recommend recharging before the battery is completely discharged.

 What's the best way to recharge an electric bike?

Always use the original charger, recharge at room temperature and disconnect once the battery is full. If the battery is not to be used for a long time, store it charged to 50-75% at room temperature.

Do you still have questions?

Contact us by email: support@upway.shop